Top spinning roll for card room drawing



P 6, 1954 w. H. NOELTING TOP SPINNING ROLL FOR CARD ROOM DRAWING w a M wMN N mm N R w E MN 3 N E @N NN q 3 q a a \N S Q QN INVENTOR.

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QMN N Hm Patented Apr. 6, 1954 TOP SPINNING ROLL FOR CARD ROOM DRAWINGWilliam H. Noelting, Evansville, Ind., assignor to Faultless CasterCorporation, Evansville, Ind.,

a corporation Application April 21, 1951, Serial No. 222,253

5 Claims. (Cl. 19-142) This invention relates to the bearing structureof the top spinning rolls for spinning room drawing frames, andparticularly in respect to the sealing off and lubricant maintainingstructure of the supporting bearings.

Whereas the advantage of ball bearings a applied to drawing rolls iswell known in the spinning art, and such bearings have been provided forand successfully used in connection with the top rolls of spinningframes, it is the purpose of this invention to improve upon ball bearingstructures as applied to the top roll in a spinning frame. In a spinningframe there is an excessive amount of dirt and grit still present in thecotton, and this, in conjunction with such lint, is thrown off from theslivers under treatment. Furthermore, there is little space within whichball bearings can be placed, and the weight loads carried by the toproll in a spinning frame is comparatively heavy. This results indifficulty in maintaining the bearings free from dirt, grit and lint,and at the same time maintain them self lubricating over a long periodoftime.

It is, therefore the principal purpose of the invention to improve uponball bearing mounts for the top roll in a spinning frame, such as toprovide ample roller bearing support therefor, maintain a supply oflubricant thereon so that the bearings are self lubricating for the lifeof the bearings, and seal off the bearings from the effect of dirt, gritand lint.

Another feature of the invention resides in the structure of thebearings so that after a long period of service and wear, the bearingsmay be readily adjusted to take up wear and any play.

Another feature of the invention resides in the structure of the bearingwherein it is self aligning in respect to the trunnion upon which theroll is supported, and the cot sleeves may be readily replaced when theybecome worn, all in the manner hereinafter more particularly set forthand described.

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims:

Fig. 1 is a central vertical section through the top spinning rollassembly with the spindle shown in elevation.

Fig. 2 is an enlarged end elevation showing one modified form of theinvention.

Fig. 3 is the same as Fig. 2 showing a second modified form thereof.

In the drawings there is illustrated several modifications showingassemblies of the top spinning roll adapted to be applied to a spinningframe. In the modification illustrated in Fig. l the roll consists of asaddle bearing l0 which may be conveniently produced from round barstock and bored through its center to'accommodate the passage of aspindle I I. Adjacent to but spaced from-opposite ends of the saddlebearing it is provided with annular grooves for reception of a sealingring l2, said ring being interposed between the circumferential surfaceof the saddle bearing and the inside surface of the roll retainer l3, toprovide a seal against escape of lubricant and the admission of dirt,grit or lint between these two surfaces. Opposite ends of the saddlebearing H] are inwardly grooved or recessed, as indicated at [4, toprovide a self aligning ball bearing raceway for the ball bearings l5.The roll retainer 13, in addition to being formed with an axial bore forreception of the spindle H to rotate freely thereabout, is recessed atopposite ends, as indicated at 16, to embrace the respective ends of thesaddle bearing in sealing relation therewith through the sealing ringsl2. The recessed portion l6 terminates in a shoulder I1 providing anopposed raceway for the ball bearings [5. The opposite end of each ofthe roll retainers I3 is similarly recessed to provide inner racewaysfor the ball bearings I8 which ride about the recessed raceway I9 formedon the end of each of the trunnions 20. Each of the trunnions 20, whenmounted at each end of the spindle I I, is provided with the roundedsupporting ends 2| to fit in and be supported by the spinning frame.Said trunnions 20 are internally tapped to screw onto the threaded endsof the spindle H, and be locked thereon by internal set screws 22,respectively. Each of the trunnions 20 is provided with an externalannular groove for reception of a sealing ring 23 mounted in sealingrelation with the internal surface of the end recessed portion of theroll retainer l3.

It will be observed that the spindle l I mounts, through the ballbearings l 5, l8, the saddle bearing I0 in slightly spaced relationthereto so as to be freely rotatable about the central portion thereof.Also, one of the roll retainers I3 is slidably mounted by said ballbearings to freely rotate about the spindle in spaced relation thereto,and also relative to the saddle bearing ill at opposite ends thereof.Thus, in spaced relation to each other and at opposite ends of thesaddle bearing there is a freely rotatable roll retainer embracing apair of spaced sets of ball bearings l5 and I8 protected by the endsealing rings 12 and 23. A supply of lubricant may be provided withineach roll retainer for lubricating the pairs of ball bearings, and beretained therein by the sealing rings l2 and 23, so as to be preservedfrom dirt, grit or lint and provide life time lubrication for saidbearings.

It may further be noted that by reason of the curved .ormecessedendfacingsl l, I9,..the opposed ends of. the saddle bearing and trunnion,respectively, with the saddle bearing and roll retainers, are therebyself aligned and spaced from the spindle so as not to bear,directiythereon. Furthermore, by reason'thereof any slight wear of thebearings may be taken up by rotative adjustment of the trunnions.

Extending circumferentially .about the outer periphery of each of theroll retainers i3 there is provided an annular groove for reception of asplit snap ring 25. Slidably mounted over pposite ends of the respectiveroll retainers there is provided a cot sleeve 26. Said cot sleeve isprovided with a correspondingand aligning internal groove 21' forreception of the snap ring '25 when the cot sleeve is slidablypositioned over the roll retainer. Said cot sleeve is flaredv at.opposite ends as indicated at 28 for convenience in camming thesnapring into its groove to permit said sleeve to be readilymounted inposition over the snap ring. Each of the cot sleeves -is scored, knurledor splined about its outer-surface,-asindicated-at 29, to provide asuitable surface for better adhesion of the cot material.

The cot sleeves may be quickly and convenient- 1y replaced by merelysliding them on or oil their respective roll retainers l3, centered andheldin place thereon by the snap rings 25 since the pressure required toforce the cot sleeve over the snap ring is very slight, but from .adirection not normally used in actual operation. it may be readilyunderstood that two purposes are served by this action, i. e., the rapidinterchange of cot sleeves whenthey are worn, and the positive retentionof the cot'sleeve upon its roll, respectively.

. It may be further understood, of course, that in place of a singlesealing ring l2 or 23 a pair .of' spaced sealing rings may be employedwhere -desired, and they may be of any cross sectional configuration.Whereas they are shown here-as circular-in cross section, they may besquare or rectangular without departing from the invention. I Similarly,in place of a single snap ring 0 v 25 for interlockingthe cot sleeveswith their respective roll retainers, a pair of snap rings or anydesired number of snap rings may be utilized and of any desired crosssectional configuration.

Also, the-usual lock nut and washer may be employed at each end of thespindle to lock the trunnions in their adjusted position inplace of theinternally recessed set screws 22.

In the modified form of the invention, as shown in Fig. 2, ametal-slinger' 35! may be secured within a recess provided at each, endof the respective roll retainers 2!) to expel fly by virtue of rotationand centrifugal force, each of said slingers being flanged inwardly toembrace an end portion of the trunnion. Each of said slingers-may alsoencompass asealing ring 3| interposed between the inturned flangethereof and the adjacent end-cf the roll retainer.

In the modified form of Fig. 3, the sealing ring M11 is of suchdimensions as-to extend within the slinger to the reduced supporting endof the trunnion to bear against the opposed shoulders 3") thereofrespectively, aswell as the adjacent recessed ends of the rollretainers. 13.1

15 1a trunnion threaded on each end of said spindle,

each having a reduced frame supported end and an inner enlarged bearingportion overlapped and embraced by outer recessed portions of said rollretainers respectively, ball bearings mounted within the recessedportions of said roll retainers --to bear on recessed ends of :said:saddle bearing and adjacent recessed ends of-said trunnions, sealingrings interposed between said roll retainers, saddle bearing andtrunnions respective- 1y, a cot sleeve slidably mounted over each-ofsaid I roll retainers, andia snap ring receivableinsaid roll retainersfor removably locking them in related position.

-2. A tsp spin ing roll for card roonr-drawing frames, co-,..prismg asdpporting spindle, a saddle bearing mounted for rotation about saidspindle, a pair of roll retainers mounted for rotation about saidspsndle in embracing and supporting relation with opposite ends ofsaidsaddlebearing, a trunnion on each end of said spindle in supportingrelation .with said respective roll retainers, ball bearings. forrotatably supporting said roll retainers upon said .trunnionsrespectively, ball bearings for rotatably mounting opposite ends of saidsaddle bearing in said respecthe roll retainers, the opposite endsofeach-of said roll retainers being recessed, .a slingersecured withineach of-said recesses having an'in- .wardly turned outer-flange spacedfrom-the respective ends of said retainers, a sealing ring interposedbetween saidfiange and the adjacent end of said. retainer, and a cotsleeve mounted over each of said retainers .removably locked l thereon.3. A top-spinning roll for card room drawing frames, comprisingasupporting spindle, a saddle bearing mounted for rotation aboutsaidspindle, a pair of roll retainers mounted for rotation about saidspindle in embracing and supporting relation with opposite ends of saidsaddle bearmg, a trunnion on each-end of said spindle in supportingrelationwith said respective roll retainers, ball bearingsforrotatablysupporting said rollretainers upon said trunnions respectively,ball bearings for rotatablymountingopposite ends of said saddlebearinginasaid respective roll retainers, each of saidroll retainershaving anouter peripheral recess formed about each end thereof, a shoulderformedon each of ,said trunnions and said roll retainers respectivelyextending in alignment with the retainer ends, a .fslinger securedatopposite ends of each retainer to lie in said recesses having aninwardly extending flange embracingand. spaced from the adjacent end ofthe retainerandsaid shoulder-,- a-resilientwasher interposed betweensaid=fiange and the adjacent retainer end .and shoulden jointly toprovide an end-seal'for said retainers, and a cot sleeve removablymountedabouteach of said retainers.

4. A top spinning roll for card room drawing frames, comprising asupporting spindle, a saddle bearing mounted for rotation about saidspindle, a pair of roll retainers mounted for rotation about saidspindle in embracing and supporting relation with opposite ends of saidsaddle hearing, a trunnion on each end of said spindle in supportingrelation with said respective roll retainers, ball bearings forrotatably supporting the outer ends of said roll retainers upon saidtrunnions respectively, ball bearings for rotatably supporting the innerends of said roll retainers on opposite ends of said saddle bearingrespectively, the opposite ends of each of said roll retainers beingrecessed, a slinger secured within each of said recesses having aninwardly turned outer flange extending over the respective ends of eachretainer respectively, and a, cot sleeve mounted over each of saidretainers removably secured thereon.

5. A top spinning roll for card room drawing frames, comprising asupporting spindle, a saddle bearing mounted for rotation about saidspindle spaced inwardly from opposite ends thereof, a pair of rollretainers mounted for rotation about opposite ends of said saddlebearing, opposite ends of each retainer being inwardly recessed with theinner recessed portions overlapping and surrounding adjacent ends ofsaid saddle hearing, a trunnion threaded on each end of said spindle,each having a reduced frame supported end and an inner bearing portionoverlapped and embraced by the outer recessed portions of said rollretainers respectively, ball bearings mounted within the recessedportions of said roll retainers to bear on recessed ends of said saddlebearing and adjacent recessed ends of said trunnions, the opposite endsof said saddle bearing and the bearing portions of said trunnions beingenlarged to provide elongated cylindrical surfaces in mating butslightly spaced relation with corresponding elongated cylindrical innersurfaces of the recessed portions of said retainers, each of saidenlarged and elongated cylindrical surfaces 01' said saddle bearing andtrunnions being provided with an annular recess spaced from said ballbearings, and a sealing ring mounted in each said recess having sealingrelation with the inner cylindrical surfaces of said trunnionsrespectively for lubricant retention.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,484,045 Wardwell Feb. 19, 1924 1,665,136 Laufier Apr. 3,1928 2,507,204 Giern et a1 May 9, 1950 2,525,592 Cotchett Oct. 10, 1950

